Diaphragm pump



Feb. 27, 1923. l 1,447,074.

1.0.G0RMAN,1R.

DIAPHRAGM PUMP.

FILED MAY 27. 1920.

3 SHEETS-SHEET 2.

Patented Feb. 27, i923.

JAMES oenvrnr. GomvrAN,

JR., OF vMANSFIELD, OHIO, ASSIGNOR 'lOl BARNES IVAN- DIAPHRG-M PUMP. l

Application led May 27, 1920.

T 0 all whom 'it may con-cern.'

Be it known that l, JAMES CARVILL GOR- lMAN, J r., a citizen of the United States, residing at 'Mansield, in the county of Richland and State of Ohio, have invented certain new and useful improvements in Diaphragm Pumps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

, This invention relates to diaphragm pumps, and more particularly to diaphragm pumps of the closed type.

The objects of the invention are to provide a simple, eflicient and durable pump of the character referred to which shall consist of fewer parts than are ordinarily employed in pumps of the same type as heretofore ordinarily constructed, and in which the parts are assembled A,in compact form, combined with a jack mounted on and forming a part of the pump structure, instead of being made separate and supported independently of the pump proper, permitting the diaphragm to be removed without removing 'the jack. A further object is to provide the pump with a straight water passage therethrough and diametrically opposite suction and discharge valves, so as to render less liable the clogging of the pump with solids, which may be more easily moved by the {iowing column of water in a straight horizontal direction than when lifted, and to cause the water to pass under the diaphragm and thus prevent the latter from being subjected to as much abrasive action as it is in a pump of the open spout type, in which the water and the solids are brought into contact with both sides of the diaphragm, greatly increasing the wear.

The invention will first be hereinafter more particularly described, with reference to the accompanyln'g drawings, which form a part 0f-'this specification, and then pointed out in the claims at the end of the description.

In said'drawings,

Fig. 1, is a ltransverse sectional elevation of a diaphragml pump embodying my invention;

Fig. 2, is a plan view of the same;

Fig. 3, is a side elevation the air chamber at the discharge end of the waterway being removed;

Serial No. 384,693.

Fig. 4:, isa plan view of the pump proper;

the jack being removed;

Fig. 5, is a detail sectional view illustrating the means employed for attaching the diaphragm and jack to the pump body or casing;

Fig. 6, is a detail plan view oi' the two part clamping ring showing the two sections disconnected; and v Fig. 7 is a detail edge View of a portion of the clamping ring, showing the joint between the two sections in assembled relation.

Referring to said drawings, in which the same reference letters are used to denote corresponding parts in different views, the letter A denotes the pump body or casing, which has a straight waterway therethrough provided with diametrically opposite inlet and outlet or suction and discharge valves a1 and a2, respectively, and a circular opening in its top; said valves being arranged in the same horizontal plane and adapted to open in the same direction. These valves are each preferably seated in an inclined position on the free end of a tubular boss which extends in a horizontal direction from la -disk or plate of metal B, or B1 placed between the pump body and a pipe section or coupling member C, or C1, one at the inlet end and the other at the discharge end of said waterway; said pipe sections C and C1' forming extensions of said passage and having exteriorly threaded outer end-portions for connecting the same with a source of supply at one side and with a discharge pipe at the other spie of the pump. The coupling member C1, adjacent the discharge valve, has an air chamber `D mounted thereon in communication therewith and a clean-out opening below the plane of the discharge valve; said clean-out openingE being closed by a cover-plate c. A jack is mounted upon the pump body or casing above the opening therein and has j ournaled thereon a crank shaft F which is geared to a countershaft F1 which carries at one end thereof pulleys f for connection with a belt driven from a power engine or other driving means. Said pulleys, however, may be replaced, if

desired, by a driving gear for direct connection with the engine. The 4crank shaft F is journaled in suitable bearings therefor on the jack E and has secured thereto a pitman rests. The ring I is constructed in se arablel parts o semi-cylindrical form, eac having a plurality of apertured lugs thereon for securing the two parts together and to the pump casing and both adapted to be made Ifrom'one pattern. To this vend each part is formed with diametrically opposite Vlugs i .and 1, the lugs i on one part or half of the ring being arranged above or below the `plane of the corresponding lug 1 on the other half, so as to adapt one pair of lugs to rest upon the other pair, as shown 1n Fig. '7., thereby permitting the two parts of the ring to be secured together by bolts K which serve also to secure the clamping ring to the pump body or casing.J To this end said bolts pass through apertured lugs a3 on the casing A, which project laterallyV beyond said bolts and are provided with bolt holes near their free ends to receive fastening bolts L which also pass through apertured lugs e on the lower ends of the legsof the jack E, for securing the jack to the pump casing (see F lgs. 4 and 5). As shown, the lugs a` are so formed that the holes therein for the fastening bolts of the clamping ring are .1 inch lower than the holes which receive the anchor bolts for the jack, so as to permit of the j machining of that part of the base of the p ump'upon which the jack and the clamping ring rest: The feet of the jack are also machined. By merely removing the four bolts which hold the clamping ring in place and the two bolts by which the en'd of the pitman rod f1. is fastened to the plunger, the clamping ring and plunger are loosened so that they may be removed with the diaphragm withoutl removing or changing the posltlon of the jack and thus get it out of alinement.

I thusprovide a diaphragml pump which possesses many advantages over diaphragm pumps of a similar character as heretofore 4 ordinarily constructed in that it consists of fewer parts and less material .composing the pump and jack and the jack being mounted wooden troughy is necessarv. The valves beu v J ing arranged diametrically opposite each' other at opposite ends of a straight water vway renders less' liable the clogging of the pump with solids, which can Vbe washed more Ieasily in a straight horizontal direction than 7,0

they can be lifted, and as the water passes entirel under the diaphragm the latter is not su jected toas much abrasive action as it is in the open spout type' where the water and the solids come in'contact with both 75 sides of the diaphra and thereby greatly increase the wear. giirthermore, in pumps of the open spout type. as heretofore constructed, in which the pump `operating lever or walking beam isgupported on the bearing 80 rings'which hold the diaphragm in place, it is necessary, in v'order to remove and replace the diaphragm, which has not' a very long life, to practically dismantle thevupper part of the pump, which is a difficult job, and requires much time and labor, whereas with my 'improvement it is not necessary to do this, since the diaphragm is` fastened to the base of the pump by a clamping ring which 'is made entirely separate from the jack and 9o is removable without removing the jack, and since the diaphragm is of rubber and therefore compressible, it follows that if the bolts on one side ofthe ordinary bearing ring are tightened more than the bolts on the other side, the bearing ring will be thrown out of\ `alinement and 1n replaclng the diaphragm f very careful and accurate adjustment is re- -qulred to make sure that all the working parts of the pump are in alinement, whereas in the new pump hereinbefore described, since the body of the pump jack rests upon the pump bodyinstead of on one edge of the rubber diaphragm,there is no ossibility of getting the pump jack' out of a inement, and 105 if it Vbecomes necessary to remove the pump jack itcan always be replaced in the same position that it originall occupied.

Having thus descri d my invention `what I claim as new and desire to secure 11o by Letters Patent is:

1. In a diaphragm pump, a casing having a water passagetherethrough and an opening in itsv top', .and inlet and outlet' valves on opposite sides of. said opening, a

'diaphragm or plunger having a flexible c1r- `cumferential portion wit the outer edge thereof. resting on said casing around the margin of said opening, said casing also having integral radially extending projections with off-set end-portions, means for clamping said outer edge down upon the inner portions of said projections, and a jack mounted on said casing having a crankshaft journaled thereon and provided ,with

a pitman-rod connection with said plunger, said jack having supporting legs with their llower ends resting upon the` end-portions of said projections exterior to said 'clamping means and provided with means for securing said lower ends of said legs to said end-portions of said projections, whereby said clamping means and diaphragm or plunger may be removed without removing or changing the position of the jack.

2. In a diaphragmpump, a casing having a water passage therethrough andan opening in its top, and inlet and outlet valves on opposite sides of said opening, a diaphragm or plunger having a flexible circumferential portion with the outer edge thereof resting on said casing around the margin of said opening, said casing also having integral radially extendingprojections with oit-set end-portions, the inner portions of said projections and the end-portions thereof being apertured, and said end portions raised above the plane of said inner portions, a clamping ring and fastening bolts' for pressing said outer edge down upon the inner portions of said projections, and a jack mounted on said casing having a crank-shaft journaled thereon and provided with a pitman-rod connection with said plunger, said jack havingsupporting legs with their lower ends resting upon the end-portions of said projections exterior to said clamping ring and fastening bolts for securing said lower ends of said legs to said end-portions of said projections, whereby said clamping means and diaphragm or plunger may be removed without removing or changing the position of the jack.

3. A pump casing having a water passage therethrough and an opening in its top,

intake and discharge valves controlling said passage, a flexible diaphragm. closing said opening and a ring with co-operating means for clamping the edge of said diaphragm between it and said casing, said ring being constructed in separable parts having diametrically opposite apertured thereon arranged in di'erent horizontal planes, whereby the lugs on one part are adapted to rest upon the co-operative lugs on the other part for securing them together and to the pump body or casing.

r4. In a diaphragm pump, a clamping ring for securing the perimeter of the diaphragm between it and a surrounding portion of an opening in the top of the pump casing closed by said diaphragm; said ring being constructed in separable substantially semi-circular parts each having substantially diametrically opposite apertured lugs thereon, the lugs on one part being arranged belou7 the plane of the lugs on the other part, so that the lugs on one part may rest upon the co-operative lugs on the other part in position to receive fastening bolts for securing them together and to the pump body or casing.

5. In a diaphragm pump, a casing having a Water passage therethrough and a circular opening in its top, a diaphragm closing said opening, a plunger carried by said diaphragm and means for operating said plunger, together' With-means for removably securing said diaphragm in place; the latter means consisting of radially projecting apertured lugs on said casing spaced apart around said opening, and a clamping ring constructed in two parts each having radially projecting apertured lugs overlying the lugs on the pump casing, and fastening bolts inserted through overlapping lugs on the two parts of said ring and through an underlying lug on said casing for securing said ring `to said casing and Athereby clamping the outer margin of the diaphragm between said two-part ring and underlying parts of the casing.

6. rlhe combination, in a diaphragm pump, of a easing having a valve-controlled water passage therethrough and an opening in its top, a diaphragm closing said opening, and means for removably securing said diaphragm in place; said means consisting of a ring having radially projecting lugs overlying lugs on the pump casing and fastening bolts entering holes in said lugs for securing said ring to said casing and clamping the outer margin of the diaphragm between it and the casing; said clamping ring being constructed in separable parts each of semi-cylindrical form and having diametrically opposite apertured lugs thereon,` the lugs on one part being arranged above the plane of the lugs on the other part and resting thereon and bolts passing through said lugs and an underlying part of the pump casing so that the same bolts are used for securing the two parts together andi clamping the diaphragm hifi-.veen the casing and said ring.

7 In a diaphragm pump, a casing having a Water passage therethrough and an opening in its top, valves controlling said passage, a flexible diaphragm closing said opening, a plunger carried by said diaphragm and adapted to project into said-water passage, a jack mounted on the pump body directly over said. opening and supporting the driving mechanism for imparting movement to said diaphragm and plunger, and means independent of said jack for removably clamping the edge of the diaphragm to the casing; said means consisting of a clamping ring constructed in separable parts having diametrically opposite apertured lugs thereon arranged in different horizontal planes so that the lugs on one of said parts will overlap and rest upon the co-operative lugs on the other part, and fastening bolts inserted through cooperative lugs in said ring` andV registering apertures in radially projecting lugs on said casing on which the feet of said jack rest exterior to said ring.

8. In a diaphragm pump, a casing having a water passage therethrough and an opening in its top, a flexible diaphragm closing said opening, a plunger carried by said diaphragm and adapted to project into said water passage when in its lowermost position, and a jack mounted on the pump over said diaphragm and having bearings theref on in which is journaled a crank shaft having a pitman rod connecting the shaft with said diaphragm for imparting movement thereto; said jack having legs prqyided with radially projecting apertured lugs, radially projecting apertured lugs on the pump casing on which the lugs of the jack rest, and lfastening bolts passing through registering apertures in said lugs for detachably securing the jack upon the casing,

through registering apertures in the lugs on the casing on which the feet of the jack rest exterior to -said ring. j

In testimony whereof I affix my signature in the presence of two witnesses.

JAMES CARVILL GORMAN, JR., Witnesses:

' A. C. SAXE,

FRED L. GRIMES. 

